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ser-zykov [4K]
3 years ago
10

Select each expression that is equivalent to 3(n+6) . Select all that apply.

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0
The answer is both b and d!!!
Marta_Voda [28]3 years ago
6 0
ANSWER

B. 3n+18

D. 2(n+6)+(n+6)



EXPLANATION

The given expression is

3(n + 6)


We expand the bracket using the distributive property to obtain,


= 3n + 18

This will give us option B as one of the correct answers.


We could also rewrite

3(n + 6) = 2(n + 6) + 1(n + 6)



This will give us


3(n + 6) = 2(n + 6) + (n + 6)


Hence option D is another correct answer.
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we know that

For a spherical planet of radius r, the volume V and the surface area SA is equal to

V=\frac{4}{3} *\pi *r^{3} \\ \\ SA=4*\pi *r^{2}

The
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SAV =\frac{(4*\pi*r^{2})}{(\frac{4}{3}*\pi*r^{3})}     \\  \\ SAV =\frac{3}{r}

we know

rMoon=1,738Km\\ rMars=3,397 Km

\frac{SAV Moon}{SAV Mars} =\frac{3}{rMoon} *\frac{rMars}{3} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{rMars}{rMoon} \\ \\ \frac{SAV Moon}{SAV Mars} =\frac{3,397}{1,738} \\ \\ \frac{SAV Moon}{SAV Mars} =1.9545

therefore

the answer is

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For the values a=8 which is a leg of a right triangle and value c=19 which is the hypotenuse find the length of the other leg b
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